title: Benchmark calculations for dissipative dynamics of a system coupled to an anharmonic bath with the multiconfiguration time-dependent Hartree method.
abstract: In this paper, we present benchmark results for dissipative dynamics of a harmonic oscillator coupled to an anharmonic bath of Morse oscillators. The microscopic Hamiltonian has been chosen so that the anharmonicity can be adjusted as a free parameter, and its effect can be isolated. This leads to a temperature dependent spectral density of the bath, which is studied for ohmic and lorentzian cases. Also, we compare numerically exact multiconfiguration time-dependent Hartree results with approximate solutions using continuous configuration time-dependent self-consistent field and local coherent state approximation.
authors.affiliation: Technische Universität München, Theoretische Chemie, Lichtenbergstr. 4, 85747 Garching, Germany.
authors.forename: S
authors.initials: S
authors.lastname: López-López
authors.forename: R
authors.initials: R
authors.lastname: Martinazzo
authors.forename: M
authors.initials: M
authors.lastname: Nest